ofVideoGrabber: return a vector of ofVideoDevice, working for gstreamer
Merge branch 'feature-videoDevices' of https://github.com/arturoc/openFrameworks into feature-listDevicesWinOSX
added ofVideoDevice listing to OS X QTKit and Quictime + Windows. Added bAvailable bool. fixed a small bug with ofXml
Merge pull request #22 from openframeworks/feature-listDevicesWinOSX

Feature list devices win osx
Merge pull request #2247 from arturoc/feature-videoDevices

ofVideoGrabber: return a vector of ofVideoDevice